Developed by a Veterinarian, the Drinkwell® Multi-Tier Pet Fountain provides 100 oz of fresh, filtered water to your pet. A patented free-falling stream of water entices your pet to drink more and continually aerates the water with healthful oxygen. A charcoal filter removes bad tastes and odors, giving your pet the best way to stay hydrated! The fountain features two places for pets to drink from, the elevated dish and the lower bowl. 100 oz water capacity Replaceable charcoal filter removes bad tastes and odors Patented free-falling stream draws oxygen into the water to maximize aeration Submersible pump for quiet operation Inline disconnect on cord to easily remove the pump Dishwasher safe (excluding pump) Recommended for cats and dogs up to 40 lbs.